Uma rede quântica de relógios atômicos precisos: os evolucionistas precisam acertar o relógio molecular!

segunda-feira, junho 16, 2014

A quantum network of clocks

Peter Kómár, Eric M. Kessler, Michael Bishof, Liang Jiang, Anders S. Sørensen, Jun Ye, Mikhail D. Lukin

(Submitted on 22 Oct 2013)

The development of precise atomic clocks has led to many scientific and technological advances that play an increasingly important role in modern society. Shared timing information constitutes a key resource for positioning and navigation with a direct correspondence between timing accuracy and precision in applications such as the Global Positioning System (GPS). By combining precision metrology and quantum networks, we propose here a quantum, cooperative protocol for the operation of a network consisting of geographically remote optical atomic clocks. Using non-local entangled states, we demonstrate an optimal utilization of the global network resources, and show that such a network can be operated near the fundamental limit set by quantum theory yielding an ultra-precise clock signal. Furthermore, the internal structure of the network, combined with basic techniques from quantum communication, guarantees security both from internal and external threats. Realization of such a global quantum network of clocks may allow construction of a real-time single international time scale (world clock) with unprecedented stability and accuracy.

Comments: 13 pages, 5 figures

Subjects: Quantum Physics (quant-ph)

Cite as: arXiv:1310.6045 [quant-ph]

(or arXiv:1310.6045v1 [quant-ph] for this version)

Submission history

From: Eric M. Kessler [view email] 

[v1] Tue, 22 Oct 2013 20:00:20 GMT (777kb,D)




Enquantos os físicos procuram exatidão com a aplicação de suas teorias e hipóteses, os evolucionistas têm somente um relógio molecular capenga que dá horas diferentes ao longo da história evolucionárias dos seres vivos!

Será que vai dar para acertar o relógio molecular por esses relógios atômicos???